Rice-huller.



D. J. HAYES.- RICE HULLER. APPLICATION FILED NOV2,1908.

918,048. Patented Apr. 13, 1909 3SHEETSSHEET l W/TA/ESSES: INVENTOH J3I/MQQLUM. Br

: gmy z/ gig D. J. HAYES. RICE HULLER. APPLICATION FILED NOV,2.1908vPatented Apr. 13, 1909.

3 SHBETSS.HEET 2.

M/VE/WOH I $114M 87 W ATTORNEY WWII/E8358.

1 is 341] L h/L- D. J. HAYES.

RICE HULLER. AEPLIOATION TILED NOV.2, 1908.

Patented Apr. 13, 19.09.

3 SHEETS-SHEET 3'.

UNITED STATES PATENT ome i DANIEL J. HAYES, OF HOUSTON, TEXAS.

RICE HULLER'.

Specification of Letters Patent.

Patented April 13, 1909.

Application filed Novembcr'2, 1908. Serial No. 46o',c4o.

useful Improvements in R1ce-llullers,,et-

which the following is a SPQClfiCtlilOl].

My invention relates to new and useful improvements in rice hullingz'machines.

The object of the invention is to provide a device of the character.described which will remove all bran, cuticle and gummy coatings fromthe rice grain and also all of the hulls which may not have been removedby the shcller. p

Another object resides in the provision of means whereby the aboveobject maybe at -tained without breaking or grinding the rice grain. orby reducing the number of grains which are necessarily broken to aminimum.

= None of the hullers now in practical use will remove all this bran andhulls because all of them are so constructed that the rice cannotberetained in the liuller and properly distributed along the cylindershell for sutlicient length of time but is crowded toofrapidly towardthe outlet end of the cylinder shell and thence to the outlet spout.

The chief object of my invention is to 'OVCICOIDQ this precipitatemovement of the rice toward the outlet and to hold it more evenlydistributed along the cylinder shell until all of. the hulls and branhave been removed.

'35 A still further object comprehends an im-' proved casingwhoseinternal surface is provided wit-h spiraled corrugations and an improvedtype of hulling' cylinders. adapted to cooperate wnli said casing andwith an 40 additional opposing abrading surface in the nature of ahulling blade, adjustably held in the casing to cooperate withthecylinder. Finally the' object. of my invention is to provide a devicewhcrebv the above objects may be attained, and which will be simple.v

durable. and easily constructed and one in which the several parts willnot be likely to get out of working order. I

With the above and other objects in view my invention has particularrelation to certain novel features of construction and operation, anexample of which is given iii-this specification and illustrated inthe-accompanying drawings, wherein:

'55 Figure 1 isa perspective view of the complete machine." l iga 2 is atop plan View with the cover turned back. Fig. is a per-' spective viewof the liulling cylinder. Fig. .i is a r and view-thereof. Fig. 5 is :1longi- ,lttdilml sectional view. of one end of the so sanie. Fig. 6 is atransversesectional view of my complete machine taken on the line -a ofFig. 1. Fig. '7 IS a vertical longitudinal section of the same taken onthe line b-b of Fig. 6. Fig. 8 is a. pers i'ective view c5 oithe;screen. Fig. '9 is the bla e. Fig. 10 is a perspective view. of:o iiefornjof means for fastening the blade.

Referring now more .partieularly to the drawings wherein like numerals(if-reference 7o refer to similar parts in-"al'l-the figures, thenumeral 1 refers-to-the legs upon which is mounted the supportiiigfraine-of myv machine whicli may be of any approved form to support the casingin either a horizontal or an inclined position. The-latter position ispreferredasit admits-of a. more con- 5 veiiient access to the cylindercasing and a. lift of the grain toward the hull-ing plate.

. The numeral Q-Tefers: to the drive wheel and the numeiah? to the'liopper.:=

My'mac'ii'i neproper I'EStSllPOIl the legs by means oFthe-supportiiigframe which com-. prises the; ends .4,'- 4, and front and backmeniber;22,"22.

5 is alower section of the casing whichioperates on hingesGand isllieldin a closed position by means of a-latch 7 which engages with catch-Rupon the upper section; 9 of thecasing. The section-:3 of. the raising'90 is designed to open downwardly and toward 7 the front while. thesection't) ot. thecasiug which carries the hopper ilisidesigned to.operate on a rear Inner- 10 and op.en..up-- \vardly and rear-'artlly-itliiis-exposingthe95 interior of ill ".tjflhlli g and. thejinachine .'lhes e two section" tie-divided-iirtlie horizontal axialline- .therhuller; cylinder and the front oulmeetingedgesare arrangedtoo; fit closely-r, against? aclry-oth'er. The-lowenjOO section oftheacasing includes the {.HSIHIL screen bottoiii-and;-.tlie screed-Llinl myjcon 4 struc'tion is-dctachably heldjin placeinathej-i manner.best shomrin Fi .1,6 andtdescribed In Fig. "ietheznumeral' ll isthe-hopper seatimm whichta-n opening leads to thein: terior of'thecasing. ,iThis-openirig, ispregz'uwhich controls the flow of the riceinto the 11s hereafte'ia .105

encircle the cylinder.

numbenof oblong annular perforations ar-.

. proper p sition in relation to the hulling cylinder 15. ,This screenis made of sheet metal and is semicircular so as to partially Itis'provided with a ranged in longitudinal rows, said rows alternatingwith rows of oblong longitudinal perforations- 1111 of -which aredesigned to permit the passage'of bran and hulls therethrough. The edgesofthis screen are held in position by means of inwardly project ingunder cut flanges 16 upon the inner-ed es of theupper ends of the frontand rear si es of easing section 22 which form seats for the edges ofthe screen and the screens distance from the hnlling cylinder isregulated by means'of yokes 17 at the center and feed end which aresupported ugon'brid es 20 and' which may be raised an lowered by. theset screws 18. These screws operate through threaded bosses 19 carriedby bridges 20 which in turn havesecu're enga ementat either end withhooks 21, exten ing from the inner walls of the lower member 22 of theframe. The screws may thus be raised and lowered in these bosses and asthey press against the screen holders will thus control its movements-The discharge end of this screen is supported upon a solid bearingflange 37 integral with the end memberv 4 and has a discharge opening 38which is provided .with a cut oil slide 39;

- The hullingcylinder is a unit but may be cast into substantially,equal sections and sirable manner. .this cylinder it must be chilled andis cast the sections be secured together in any de; As there is greatwear on hollow and is merely a cylinder shell: The

a feed end 23: of this shell is provided with ribs 24 which extend from.the end thereof in a 'spiraled manner, at any desirable angle,

preferably aboht forty-five degrees from one-fourth to one half of thelength of the entire cylinder shell. Alternating with these ribs anotherset ofribs 25 begin at about that section of the feed end-of the shellwhere the ribs 24 end. The alternate ribs of this second set each extendback between the ribs of the first set in such a manner as to catch thegrain that may -drop off of the inner ends of the ribs 24:. -There isleft sufiicient transverse and annular space between these sets of ribsfor the passage of the rice. This second set of ribs spiral at an anglepreferably, twelve or fifteen degrees in a reverse direction from thatof the first set of ribs, so as to give a reverse or retardin 'motion tothe rice fnom that given by sai ribs 24, These ribs 25 extend to thecenter or cg beyond if desirable, Dram cylinder shell at These blockshave A toreceive the adjustin screws 34 provided with collars 35 to holdthis angle and connect with ribs, 26 which are practically acontinuation'of ribs 25 and which extend in an exact longitudinal di-Icharge of the grain'from the outlet pipe 13.. 7

These ribs 24, 25'.and 26 are integral with the cylinder shelland'the'sectional end view I of either of them is substantially.-triangular in shape with'the'large'r side of the triangle having adecided outward; curve shown -in 1 Fig. 7. This arrangementofithe'ri'bs'lequally distributes the wear friction of 'l h. e cylindershell and prevents.- the feed end from wearingout before the dischargeend as is usually the case in rice hullers. 1 The cylinder shellrevolves on, a shaf 27 as shown in Figs. 4, 5, 6,'and"7. This-slaft issecured to said: shell by means of con; cal shaped clamps'28whichifitiinconical bearing surfaces in either exidther'of, through which clampssaid shaftlpasses and to which it is secured by means of nuts-29. Thisshaft operates in, bearings 30 and carries the drive wheel12.- v, p Thenumeral 31 designates the blade which is -.a fiat rectangular hard.me'tal member whose opposite edges may be rounded,.convexed or strai htas desiredvand is singly or doubly shouTdered at each end-and 'issecured at either end thereof to blocks 32 which are slidably held inbetween the opposing flanges of the casing 5'andof the frame 22.ifurcated extensions 33 I them from longitudinal play on blocks 32 andthe said screws 34 engage t ing. These blocks-are provided withshouldered seats for receiving the shouldered ends of the blade as shownin Fig.'10 and as the arms formed by the shoulders are centrally locatedat the ends of the blade the blade may b3 readily reversed, end for endor edgefor e e. w The blade is located in front of and near thebottom-of the cylinder shell, so as to cooperate with said shell isparallel therewith and is so positioned that the edge thereof comes.into close roximity with the ribs of the cylindershe the distance beingregulated by the set screws 33. The grain is thrown a inst this blade bythe rotary motion of t e cylinder shell'and'the desired friction is thusproduced The upper or top sections'5 and 9of the casin with a pluralityof rows 37 0 corru ations, WhlCh rows are'parallel with each 0t er andspiraled around the inner surface of the casreaded sockets in the lowerbear ing porti0 3. of the cylinder shaft bearare provided. I

hull is still on the grain. It is then poured in the hopper and passesgate 12 into the feed end of the cylinder shell. This shell revolvesfrom the front of the machine and the ribs 24Ibein rearwardly spiraledforces the grain towar the outlet end. The grain then comesin contactwithribs 25, which being forwardly spiraled impart to it'a re.-

' tard motion and throw it back toward the feed end. This retard motionis overcome by the grain thrown from ribs 24, as these ribs are spiraledat a much greater angle than the ribs 25 and is graduall forced towardthe discharged end of the cy ind'er. The upward curve of ribs 26 nearthe outlet end of the cylinder shell again ives a retarding motion tothe grain and orces it into the outlet spout 13 which discharges it fromthe machine. The ribs 24, 25, and 26 are so shaped to carry the grainaround with the cylinder shell and the friction caused by the rice beingbrought into contact with the blade by reason of the rotating motionthus given to it together with the friction caused by the corrugationsor ribs on the inner surface of the upper sections of the casing inconnection with the two retard motions above described removes all ofthe bran and hulls from the grain. The bran and hulls pass through thescreen 14: and are removed from the machine by any suitable means. Endcasings 36 fit closely against the ends of the cylinder shell andprevent the escape of the grain except through outlet 13; The grain isdischar ed through this outlet spout 13 from the hul er.

from the outer end thereof in a s iraled man'- ner about one-fourth ofthelon 1tudinaldistance between theends thereo another-set of ribsextending ina reverse spiraled manner from the first set and extendingto about the longitudinal center of the cylinder the second'set andextenrlilng in an exact said cylinder third set of ribs being pr videdwith anupthe two SfJbSCl'l shell and a third set-of ribs uniting with award curve near the outlet end thereof, the ribs of'each set beingsubstantially parallel with each other and beinga uniform distanceapart, and longitudinal spaces being left between the-ribs of the firstand second sets.

2. In a machine of the character described the combination with ahuller, blade and a casing, the latter having an inlet at one end and adischarge outlet at the other end: of a hulling cylinder provided withthree sets of ribs, the first of which extend spirally from the feed endof said cylinder to apoint intermediatethe ends thereof, the second ofwhich begin near where the first set terminate and extend in a spiraleddirectionthe reverse of that of the first set to a point near the centerof the cylinder and the third of which sets connects with the second andpractically continue the same in a longitudinal direetionwith saidcylinder to a point near the discharge end of the same and end in agradual upward curve, the aggregate len 11 of the three sets of ribsbeing equal to t 1e length of the cylinder.

3. A hulling cylinder comprising a hollow shell whose body portion is ofa uniform diameter, said body portion carryin integral therewith, saidribs being divided into three. sets, those of the first set'curvingspirally rearwardly from the feed end of said shell, those of the secondset curving spirally forwardly from a point near the termination of thefirst set to a point near the longitudinal center of the shell and thoseof the third set being a practical continuation of those of the secondset, each to each, extending in a substantially longitudinal directionto the outlet end of the shell.

4. Ina machine as described, a'casing, a hulling cylinder having ribsthat, extend lengthwise of the cylinder but not continuously, theentrant ends of the same curving rearwardly and spirally to a. pointintermediate the feed end of said cylinder and the longitudinal centerthereof, and after suffering a break in their continuity extendingforwardly a curved and s iraled direction to a point intermediate t csaid break and the outletend thereof and then to the outlet end of theshell and terminating with an upward and forward curve.

In testtimony whereof I have signed my name to his s iecification in thepresence of ing vwitnesses.

DANIEL J HAYES.

-Witnesses: "En. E. Rooms,

Haney A; SHAEFER.

